Coffee urn



FIG. 1 is a perspective view of the design;

FIG. 2 is a front view of the design;

FIG. 3 is a right side view of the design;

FIG. 4 is a rear view of the design; and,

FIG. 5 is a top view of the design.

The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a coffee urn, as shown and described. 